Automatic clutch.



O. G. TALBOT.

AUTOMATIC CLUTCH.

APPLICATION FILED 00'1. 26,1909.

Patented July 26, 1910.

- to overrun.

tional perspective view of the outer section 1 tions of the clutch together.

-locking the wheels to the drive shaft in for- ]tain novel and peculiar features of construccorresponding to Fig. l, but showing only a motor car or other wheeled vehicle,

provided with a recess 6,. receiving the pro- UNITED STATES PATENT OFFICE.

omvnn c. TALBOT, or KANSAS CITY, MISSOURI.

AUTOMATIC CLUTCH.

Application filed October 25,

To all whom it may concern:

Be it known that I, OLIVER O. TALBOT, a citizen of the United States, residing at Kansas City, in the county of Jackson and State of Missouri, have invented certain new. and useful Improvements in ,Automatic Clutches, of which the following is a specification.

This invention relates to automatic clutches for wheeled vehicles, such as motor cars, and contemplates the provision of a simple and reliable clutch for positively ward or retrograde movement and adapted, in making a turn, to permit the outer Wheel To this end the'invcntion consists in certion and organization as hereinafter described and claimed; and in order'that it may be fully understood reference is to be had to the accompanying drawing, in. which 1 Figure 1, is a vertical sectionof a drive shaft equipped with a clutch embodying my invention, the inner face plate of the clutch being omitted. Fig.2, is a section on the line 11-11 .of Fig. 1. Fig. 3, is a view a fragment of the clutch. Fig. 4, is an enlarged sectional perspective view of the inner section of the clutch. 'Fig. 5, is a secof the clutch. Fig. 6, is-a detail perspective view of one of the dogs for locking the see- In the said drawing, where like reference all the figures, 1 indicates the drive-shaft of equipped near each end with a collar 2 having a peripheral projection 3, and provided at its inner side with diametrically oppositerecesses 4. p 1

Journaled on each collar 2, is a collar 5,

ectiOn 3 and of slightly greater length than the same, the opposite-ends of said recess constitutin oppositely disposed shoulders 7 and 8 agamst which the adjacent ends of the projection 3 are adapted to abut accordingly as the vehicle is propelled forward or n rearward respectively.

The can 5. is provided with two sets of diametrically opposite peripheral openings 9 and 10 respectively, and in its inner face Specification of iletters Patent. Patented J uly 26, 19 10 RElSS UED 1909. Serial no. 5243,97.

with passages 11 and 12 connecting the openings 9 and 10 respectively with recesses 4. The openings 9 and 10 are of slightly reduced length at their outer sides to pro: vrde inwardly-disposed shoulders or stops 13 and '14 respectively. At the opposite ends of said openings the collar is recessed at 1 5, to receive the cars 1601 the dogs 17 and 18 occupying openings 9 and .10 respectively, screw-bolts 19 secured to collar 5 and extending through the ears 16, providing pivotal supports for the dogs outward movement of the dogs 17 being limited by the engagement of their exten- 'slons 20 with shoulders or stops13 and outward movement of the dogs 18 being limited by the engagement of their extensions 21 with shoulders or steps 14, itbeing noted that when the dogs are all disposedfat their outermost limit of'movements, their outer faces lie in the same circle .as and'form a continuation of the periphery of the said collar.

Hereinafter where general reference is made to the inner section of the clutch it is to be understood that collars 2 and 5 are referred to. 1

Ofthe outer section of the clutch only the hub is shown, as the spokes, rim'and tire may be of any suitable or preferredtype. The hub is preferably in the form of-a cir- 17 and. 18, v

cular casing 22 fittingsnugly and rotatably on the" inner section, the inner face-plate or cap 23 being removable. The rim of the hub is provided in its inner side with cavities 24 wherein are pivoted dogs 25, either of the dogs 17 being capablcpf swinging down- Ward into either of the openings 9 and either of-the dogs 18 being capable of swinging into either of the openings 10.

Extending loosely and capable of longipassages 11 and passages 12 respectively, are tubular rods 26 and 27, the outer ends of said rods beingrespectively pivoted to dogs 17 and 18.

'tudinal and slight lateral movement within IQO Pivoted 'at 28 within recesses 4 and to the collar 2 at diametrically opposite points, are rods 29 and 30 fitting telescopicallyin cured to rods 29 and 30 are stoppins projecting through longitudinal slots 32 in tubularyrods 26 and 27 respectively, and sothe tubular. rods, said pins by engagement with the opposite ends of said slots limitin the extension and contraction of the to escopie connections between collar 2 and the dogs pivoted to collar 5, and in order to provide means for always holding either Fig. 1, it will cause collar 2, to turn in the same direction and swing dogs 17 inward by the time the lug 8 strikes shoulder 7 of collar 5, the rods 30 being at the same time forced outward in the tubular rods 27 against the resistance of the springs 33' in said tubulargods, this outward pressure of. the springs serving to maintain the dogs 18 in their extreme outward positions and thus guard against any of the (10 swinging into openings 10. As the dogs 17 are r the juxtaposed locking dogs 25.

. with collar 5 or thus swung inward as explained, the uppermost dog 25 swings downward into the registering opening 9 and at the same instant collar 5 starts to rotate under the ressure of the hi 3 of collar 2.- This P a:

movement ,of collar 5 through pressure onthe said dog 25 imparts rotation to the outer section or wheel, and it will be understood that as the said dog 25 is carried below the plane of the drive shaft and the companion dog 25 above the plane of the drive shaft, the formcr'swings downward andout of the said opening 9 while the companion dog 25 swings downward and into its registering opening 9 so that'the outer wheel on the drive shaft shall be positively driven as long as the car travels in a direct line, 'and in making a turn is'free to overrun as will be readily understood, and after the turn is made the parts resume their original relation.

As the forward movement of the car is arrested, the dogs 17 and 18 are moved out ward under the pressure of their respective springs 83 and if the arrest occurs when the dogs are in the relative positions shown in Fig. 3, the outward movement of said dogs imparts corresponding movement to i If the arrest occurs when said dogs are out of alinement, the dogs 17 are moved out as explained, the dogs 25 being held out by reason of their peripheral engagement with collar 5.

' It will be noted thatin the operation of the clutch there, is practically no strain imposed on the telescopic connections, as the dogs 17 and 18 are utilized solely for the purpose of permitting dogs 25 to interlock to force said dogs 25 out of the openings 9 or 10 as the case may be. When" the parts are interlocked together the pbwer is transmitted from the collar 5 of I the inner section to'the hub of the outer section through the instrumentality solely of one or more of the do s 25, which are of such proportion as to be capable of withstanding any pressure which may be imposed upon them, it being understood that they are loosely pivoted to the hub so that no strain shall be imposed upon their pivots.

When the direction of movement is reversed, that is when the machine is backed under the power of'the drive-shaft, the lug of the inner collar engages shoulder 8 of collar 5, the dogs .18 being drawn inward and the dogs 17 pushed outward. As a result the dogs 25 enter the openings 10. It will thus be seen that the operation of the parts is the same as above described with reference to the forward movement of the machine except that the dogs of the outer section or wheel operate in conjunction with the openings 10 for the purpose of driving the machine backward.

From the above description, it will be ap parent that I have produced a positive clutch which will-perform its function efficiently and reliably, which embodies the desirable features of simplicity, strength, durability, compactness and cheapness of construction and that it is susceptible of change in minor particulars'without departing from the spirit and scope of the appended claims.

Having thus described the invention what I claim as new and desire to secure by Letters Patent, is

1. The combination of a drive-shaft, a collar secured thereon and provided with a peripheral lug, a collar surrounding the firstnamed collar and provided with a recess receiving and of slightly greater length than said lug and also provided with peripheral opening dogs pivoted to the outer collar and capable nit-swinging inward and outward in said openings, extensible connections pivotally connecting said dogs with the inner collar, an outer section journaled on the collar provided with said openings, and provided in its inner side with cavities, and dogs pivoted in said cavities and adapted to swing inward into said peripheral openings after the dogs thereof are moved inward and adapted at times to be forced outward out of .said openings when the dogs of the latter are moved outward.

2. The combination of a drive shaft, a collar secured thereon and provided with a peripheral lug, a collar surrounding the first-named collar and provided with a recess receiving and of slightly greater length than said lug and also provided with peripheral openin s, dogs pivoted to the outer collar and capable of swinging inward and outward in said openings, extensible connections pivotally connecting said dogs with the inner collar, yielding means tending to 4 7 dogs with the1r outer s des 1n the same, circle as and forming a continuation of the pe-: 'rlphery of said outer collar, means for pre-' hold said connections extended and the said dogs with their outer sides in the same circle as and forming .a continuation of the periphery of said outer collar, an outer section journaled on the collar provided with said openings, and provided in its inner side with cavities, and dogs pivoted in said cavities and adapted to swing inward into said peripheral openings after the dogs thereof are moved inward and adapted at. times to be. forced outward out of said openings when the dogs ofthe latter are moved outward.

3 The combination of a drive shaft, a collar secured thereon and provided with a peripheral lu a collar surrounding the first-named co lar and provided with a re; cess' receiving and of slightly greater length than said, lug and also ripheral openings, dogs plvoted to 1 the. outer collar and capable of swinging inward and outward in said openings,- extensibleconnections pivota'lly connecting said dogs with the inner collar, yielding means tending to holdsaid connections extended and the said venting said do'gs swingingoutward beyond said last-namedfposition, an outer section journaled'on-the collar provided with said openings, and provided in its inner side with cavities, and dogs pivoted in said cavities and adapted to" swing inward into saidperipheral "openings after the dogs thereof are moved inward and adapted at times to be forced outward out of said openings wheg the dogs of the latter are moved outwar engagement of one end or the other of said lug to be rotated 1n aforward or backward direction, and provided also with two sets of peripheral openings, one set facing in the opposite direction to the other set, correspondingly facingdogs occupying one'set of reater said openings. and oppositely facing dogs occupying the other set of said openings, the dogs being pivoted to the said outer collar and adapted to swing toward and from the shaft, extensible connections pivotal'ly connecting each of said dogs with the firstprovided with penamed, co1lar,-springs tending to hold said connections extended and their connected dogs with their outer sides in the same circle section journaled on the collar provided with the openings, and provided in its inner side with cavities, and dogs pivoted in said cavities and adapted to swing inward into said peripheral openings after the dogs thereof are moved inward and adapted at times to be forced outward out of said openings when the dogs of' the latterare 'moved outward. p p a In testimony whereof I affix my signature, in the presence'of two witnesses.

p OLIVER (l TALBOT. Witnesses;

HELENQ Ronenns, .G. Y. THORPE. 

